Door lock



T. E. SHANNON.

DoorLLoCK.

APPLICATION HLED JULY 19|`I919.

1,431,263, Patented Oct. 10,1922.

4 a 3 SHEETS-SHEET 2.

T. E. SHANNON. DOOR LOCK. APPLICATION FILED JIULY I9, 1919.

Patnted Oct. 10;, 1922 3 SHEETS-SHEET 3.

fava.

Patented @eto 10, 1922..

ras earn @AENOR THOMAS E. SHANNON, CHICAGO, ILLINOIS, ASSIGNOR TO KEENOKEYLESS LOCK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

noon LOOK.

Application filed .Tuly 19, 1919.

To all whom t may concern:

Be it known that I, THOMAS E. SHANNON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Door Locks, of which the'following is a specification.

This invention relates to improvements in door locks and has for itsobject to providev an improved door lock which maf,l be unlocked fromthe outside by means of a combination mechanism used in conjunction withthe lock bolt member.

Another object consists in the provision of means to lock thecombination mecha-` described in which unlocking latch members' may beused or rotatable knob members, as'

desired. f

Still another object consists in the construction of the lock casing sothat thevpurchaser of a complete mechanism, ignorant of the combinationwill be able to ascertain the combination Without taking the case apart.

These and other objects will be more fullv set forth and described inthe following` specification and shown in the accompanying drawings inwhich- Figure 1 is a side elevation of a door plate utilizing myinvention;

Fig. 2 is an end elevationl ofV avdoor having my improvedV mechanism'applied thereto; i

Fig. 3 is a vertical section along the line 3-3 of Figs. 1 and 4 drawnto an enlarged scale;

Fig. 4 is a vertical section along the line .,4-4 of Fig. 2;

`plate 12 and cover 12a.

Serial No. 312,058.

shown in the lower portion of Fig. 3, showing rotatable knobs and rockerarms substi tuted for the latch members shown in Fig. 3;

F ig. 8 is a detail of the mechanism shown in Fig. 7;

Fig. 9 is a front elevation of the interior of a portion o1c the lockcasing showing the slide bar in position; i

Fig. lOis a similar view of the inner face of the cover of the casingshowing the auxiliary slide bar in position;

Fig. 11 is a front elevation of the exterior of a Vportion of the casecovering;

Fig.` 12 is a detailed elevation of the push bar mechanism; and

Figs. 13, 14,` and 15 are perspectives of the combination disks, the`eccentricity being reXaggerated for the purpose of illustration.

Like numerals refer to like elements throughout the drawings, in which10 designates generally a door in which is mortised or inset a lockcasing -11 having the face A bolt 13 of conventional form is providedhaving the usual bevelled side to permit forcing back by coaction withthe striker plate, not shown, which is carried by the door jamb. Thisbolt is carried by a reciprocable bar 13al which is Vprovided withnotches or recesses 13b at top and bottom of its rearward eX- tremity,such extremity being slightly enlarged. The body of the bolt bar 13n isguided by and reciprocates between stationary posts 14 carried by thelock casing. En-

gaging the lowermost of the recesses 13b is slightly bentvat its otherextremity at 16a i and l'itting between a pair of studs 17, thisarrangement bringing resistance to bear against the movement of' thecrank 15 which is pivoted on the stud r13, as shown in Fig. 4.Reciprocably mounted in the casing is the slide bar 20 (see Fig. 3 forexample) having 20 adjacent its lower' extremity, this lug beinenormallyin contact with the arm 15 ot the crank At the lower end of the slidebar 20 is the contact tace 2Ob adapted to be engaged by an operatingmember, as will be more i'ully described hereinafter. Super-imposed uponthe slide bar 20 is an auxiliary slide bar 21 having a slot 21CL inwhich slides the lug 20a. The auxiliary slide bar overlies the bolt bar13a, as shown in Fig. L1-, and is provided at its extremity 21" with thereduced laterally projectingil stud or lug` 21C (see Figs. 3 and 4;),this lug;` or stud being intended to coact with the disc members ot thecombination mechanism, as will be described hereinafter.

lVhen arranged as shown in the drawings, the slide bar 2O lies betweenand is guided in its reciprocal movement by the upper pair of lugs 19:tand 19b and the lower' pair of lugs 19C and 18. the latter being`provided with a stud portion as previously described, upon which ismounted the bell crank 15. these luirs being located on the inner sideof the bottom of case 11 as shown in Fig. 9, for example. Similarly casecovering' 12il is provided with alinina snide lues 19d. 19e, 19f and19g. 'llide bar 2O is provided with lua portions 2()e which coact withlugs 19a and 19h to limit the withdrawal of the slide bar. Similarly.auxiliary slide bar 21 is provided with similar lugs 21g enacting. whenin the arrangement shown, with luns 1.()d and 19e. these counting` luesin the case of the auxiliary slide bar 21 preventing; engagement of stud21c with the uppermost notch 13b ot the bolt bar 131.l therebypreventing a projecting lire;

interference with the unlocking' movement o1' the bolt and bolt bar.

Bell crank 15 lies between the slide bar 2O and auxiliary slide bar 21,as shown in Fia'. 3, for example. Save for the projecting` extremity 21band stud 21C. auxiliary slide bar 21 is similar in construction and sizeto slide bar 20 and is interchangeable with respectto the guide lugswith said slide bar i. e. auxiliary slide bar 21 may be mounted betweenlugs 19a, 19". 19c and 18 while slide bar 2O may be mounted between lugs19d, 19e` 19r and 19S, for the purpose to be described hereinafter.

The arrangement of the stud 20a and slot 21a is such that the slide bar20 may be operated to actuate the bell crank 15 to move the bolt 13 outof locking position against the action of the spring 16 without movementot the auxiliary slide bar 21. On the other hand, when the auxiliaryslide bar 21, which is provided with a contact face 21d at its lowerend, is actuated, it will engage the stud 20a and pick up the slide bar20. thereby actuating the bell crank 15, so that actuation of either theslide bar or auxiliary slide bar 21 will result in actuation ot thebeller-ank 15 to unlock the bolt 13. `Release door 10 are the doorplates 25 and 26, the

former being located at the outside ot the door and the latter at theinside.l Suitable handles 25l and 26a are provided for opening` orclosing the door. 1n Figs. 1 to 3,

1 have shown a latch-operating mechanism consisting;` ot latch members23 pivoted at 2S, one in each ot the door plates 25 and 2G, these latchmembers being provided with extremities 28h projecting through apentures 11u in the lock casing and lying,` beneath the contact surfaces2Ob and 21d ot the slide bar and auxiliary slide bar. see Fig. 3.Depression of the latch members 2S will result in actuation oiI theslide bars, as described above, the latch member located on the outsideot the door actuating both slide bars, while the actuation of the innerlatch serves to actuate the slide bar 2O only. Located in the upperportion of the lock casing` 11 and extending through the doorl plates isthe rotatable shaft 30, capped at the outer end by a cap 31 and havingIon its inner end an operating` handle 32 having the significantextremity 32Pv ot different conw figuration than the other extremity32h. This sha-tt is preferably ot non-circular cross-section and carriesan eccentric driving disc 33 inside the lock casing. Located around andspaced from the shaft is the fixed bushing- 311- upon which arerotatably mounted the eccentrically driven discs 35 and 36, (see Fig'.3, for example). Spacing` washers 37 are located between the discs, asshown in Fig. 3. The driving; disc 33 is provided with a pin 33athreaded into a suitable hole in the disc and operable to engage asimilar pin 35a similarly carried by a disc 35. This disc `has on itsopposite tace a second pin 35h, (see Figs. 5 and 1a) operable to engagea pin 36a carried by a disc 36. The discs are provided with enlargednotches 33h, 35C, 361. respectively. which when in alinement and properposition will accommodate the extremity 21b of the auxiiiary slide bar21. llVhen in such position, this slide bar may be actuated by the outerlatch member 28 to permit movement of the bolt 13. Vihen any ot thediscs, however, have their notches out ot alinement with the extremity21c of the auxiliary slide bar, movement of the latter will be preventedand it will be impossible to opera-te the lock from the exterior ot thedoor.

The driving` disc 33 is provided with a second notch 33d (see Fie. 4). Apair of interacting push bars 4l() and 11 are provided having` visibleends 10a and 41a projecting into the face 12 of the lock casing. Thesepush bars are of conventional construction and are provided with slotse0. alb,

respectively, in which lie the extremities of a lever 42 which ispivotally mounted on a fixed post 43. rIhis construction is such thatwhen the outer end of one push bar is pushed inwardly, the lever 42 willmove the other push bar outwardly. The inner eX- tremity 40c of the pushbar 40 is arranged to engage the notch 33l of the disc when the latterisin position with the notch 33b alining with the slide bar extremity21, that is, in unlocking position. As is customary in mechanisms ofthis character, the discs 33, 35, and 36 are actuated through rotationof the shaft 30, the driving disc 33 picking` up the disc 35 and thelatter picking' up the disc 36, the operating handle 32 being rotated inthe proper manner and in the proper sequence of operations to aline thenotches for unlocking of the door from the exterior thereof. When thediscs are in unlocking position, the push bar 40 may be moved inwardlyuntil its extremity 40c engages the notch 33d when the combinationmechanism will be locked in unlocking position, so that it will beimpossible to actuate said mechanism.

Similarly, when -it is desired to lock the combination mechanism inlocked position so that it will be imposs'ble to unlock the same fromthe exterior of the door, the discs are moved out of unlocking position,after which the operating handle 32 may be rotated until the notch 33balone is in unlocking position, the othei1 discs being in lockingposition when the push rod 40 may be moved inwardly to engage thedriving disc. The notch33d thereby prevents further manipulation of thedriving disc and consequently oi the driven discs, which latter being`in locked position, prevent unlocking or the door from the outsidethereof by preventing movement of the auxiliary slide-bar 21.

To prevent over-travel of the discs 33, 35 and 36, I provide the leafspring member 45 having portions 'frictionally bearing upon the discs33, 35, and 36, and its other eX- tremity being partially bent aroundthe post 46 and into a notch47a in the block 47. A spring 48 extendsfrom the post 14 around the guide 49 in which are guided the push bars40 and 41, and bears at its other extremity against one of the flattenedsurfaces 42a of the link 42, the construction being such-that whicheverof its two extreme positions the lever 42 is in, movement therefrom willbe resisted by the spring 43.

In Figs. 7 and 8, I have shown a mod".- iication of my invention inwhich rotatable knobs 50 are substituted for the latch members 28, theseknobs each being 'provided at their inner extremities with rocker arms51, these rocker arms being seated in thepcurved portions 11b with theirextremities 51a in contact with the Contact surfaces 2Ob and 21d, ysothat rotation of the knobs in either di.-

rection will result in the actuation of either the slide bar 2O or theauxiliary slide bar 21. In the arrangement shown, my .lock is shown asapplied to a door openng inbolt bar 13a and turn it over and alsoreverse the positions of slidebar 20 and auxiliary slide bar 21 i. e.make the change of each from between one set of guide-lugs to the otheras previously described, in which event the other of the notches 13bwill become the operative notch, and the bevel of the bolt 18 will bereversed to correspond to the changed position. This reversibility alsopermits application of the same mechanism to a door swinging in theopposite direction, but hinged at the same side, in which event it ismerely necessary to turn over the bolt-bar 13a, the relative position ofthe slide bar and auxiliary slide bar remaining the same.

Located on the outer face of the door plate 25 are the raised radialribs 55, each rib corresponding to the number in the combination andlocated about the shaft 30. Each of the ribs 55 is provided with twonumerals as shown in Fig. 1, for example, to `permit operation of thecombination in either direction since location -oi the locking`mechanism on opposte sides of the doors will operate to change thedirection of initial rotation of the operating member, in which eventone set ot numbers may be used while the other may be used when theopposite rotation is required.

Burglars or others Seeking to pick or open combination locks endeavor tolfeel out the combination by holding the slide bar or its equivalentagainst the discs, while rotating the operating handle 32 which carriesthe driving disc 33, the idea being that the passage or" the notches inthe disc past the slidebar, when in contact with the discs will beperceptible to a skilled operator. To foil any such attempts, Iconstruct my disks eccentrically with the notches 33", 35 and 36h at thepoint ot least eccentricity or in the portion ot lesser eccentricity.Furthermore the pins are so located relative to these notches that notch36b of disc 36, which is the rst disc to be placed inoperatingcombination, will always be protected by either disc 35 or disc 33 inrotation of two or of all three discs i. e. notch 36b will underlieportions of greater eccentricity in either disc 33 or 35, or both, sothat it will be impossible for its edges to Contact with the stud 21C.Inability to locate this notch will obviously prevent detection of thecombination. ln addition, l provide a plurality ol notches 33@ about theperiphery ot disc 33 and similarly a plurality ot notches 35C and 36,about the peripherics ot' discs 85 and 36, respectively. 'l ,erve toconfuse ."hese anyone seeking; to detect the combination in the mannerdescribed by providingl plurality oi? misleadingl notches, none oil.iwhich give any indication ol the true ui'iloclring notch.

il person using' the combination. mechanism 'may set or lock the same:troni the inside oi the door Without opcnimjj the door by rotating;`the cap 3l and thereby the driving disc` llniovingr the combinationmechanism to locke( position.

To enable a purchaser oi my mechanism to ascertain the combinationbefore inserting,n a locl in the door, l. provide sight opening-'s A. inthe case ll. and case covering plate 12 in line with the notches 33D,255 and 36D when the latter are in unlocking' position. Also I provideon each side ot the case about the center ol' rotation ot shalt 80, aplurality oic raised numerals B (see lug. li) corresponding in positionto the numerals on the ribs 55.u To ascertain the combination. theoperator Will first rotate the operating' handle 32 until notch 36h isin alinement With adjacent opening A? he may then reverse the rotationot the operating handle until notch 35C in the disc is alined with notchBlib and the sight openingY A.. a't'ter which the direction ot rotationis again reversed until notch 333" is alined with the other two notchesat the sight opening A. At this time, the combination mechanism is inunlocking); position and it the operator has noted the numerals at thepositions olf alinement of the respective notches during manipulation ofthe operating; handle, he will lthen be in possession ot the propercombination. t

lt will be obvious that my invention 1s susceptible of modifications andimprovements, and l do not Wish to be restricted to the form shown anddescril ed except as defined in the appended claims.

l. .ln device ot the class described, a locl: bolt and bar, means tomove said bolt and bar to unloclrirm` position, said moans comprising`a. pluralityv oit interconnected interchangeable slide bars, actuatingmeans to act-nate said slide bars, a bell crank member operativelyinterposed between said slide bars and said. loclf bolt and bar, and combination mechanism coactingwith one o'll said slide bars to permit orprevent actuation of said lock bolt and bar.

2. ln ay device of the class described, a reciprocable loclr bolt, a barcarrying said bolt, means to move said bar and bolt to unlockingposition, said means comprising a slide bar, combination mechanismcoacting with said slide bar to permit or prevent unlocking' of saidbolt, said mechanism comprism@l av plurality oi notched disks, and meansto operate said disks, said. disks beine; eccentrically and rotatablymounted. L'

2S. ln a device ofthe class described, a reciprocable lock bolt, a barcarrying` said bolt, means to move said bar and bolt to unlockingposition, said means comprising' a slide bar, combination mechanismcoacting with said slide bar to permit or prevent unlocking; ot saidbolt, said mechanism comprismg a plurality of notched disks, means tooperate said disks, said disks being eccen trically and rotatably7mounted, and a notch in each of said dislrs lying in the portion otlesser eccentricity.

e. ln a device oi the class described, a reciprocable lock bolt, a barcarrying said bolt. a slide bar, means operatively interposed loe-ltiveen said lock bolt and bar and said slide means, said meansconcmrising a pivotally mounted member having a portion engageable bysaid slide bar and a portion engaging' said bolt bar, the latter beingnotched on each side to permit inversion for engagement on either sidethereof by said member, and combination mechanism enacting' with saidslide bar to permit or prevent unlocking of said bolt.

5. ln a device of the class described, a bolt carrying bar, a slidablebar on one side ot said bolt-carrying` bar, an auxiliary slide bar, anoperating' member located bctivee said slide bar and auxiliary slidebar, said operating* member being engageable by one of said slide barsand having a portion engaging said bolt-carrying member, and combinationmechanism coacting,l with one of said slide bars to permit or preventunlocking of said bolt carrying` bar.

6. ln a device of the class described. a bolt-carrying bar, a slidablebar on one side of said bolt-carryingsbar, an auxiliary slide bar, anoperating` member located between said slide bar and said auxiliaryslide bar en gageable by said slide bar and engaging said bolt-carryingbar, and combination mechanism coacting- With one of said slide bars topermit or prevent unlocking` oit'said bolt carrying bar.

7. ln a device of the class described, a bolt-carryingl bar, a slidablebar on one side of said bolt-carrying bar, an auxiliary slide bar, anoperating member located between said slide bar and auxiliary slide barengageable by said slide bar and engaging said bolt-carrying bar, saidbars being` inter-connected to permit relative movement or said slidebar, and combination mechanism coacting` with one of said slide bars topermit or prevent unlocking of said bolt carrying bar.

8. ln a device of the class described, a bolt-carrying bar, a slide bar,an auxiliary slide bar, an operating member located be `rvith one ofsaid notches, meansto actuate said operating member, said `meanscomprising a reciprocable member, means to guide and limit the movementot said reciprocable member, and combination mecha nism coacting Withsaid reciprocable mem- `ber to permit or prevent unlocking oi said bolt.

10. ln a device of the class described, a locking bolt, a bar carryingsaid bolt, said bar being provided With a notch in each side thereof, anoperating member in engagement with one of said notches, means toactuate said operating member, said means comprising a reciprocablemember, means to guide and limit the movement of said reciprocablemember, said reciprocable member being provided With a stud, andcombination mechanism provided With notches alinable to permit movementot said stud in unlocking said i bolt member.`

il; ln a device of the class described, a locking bolt, a bar carryingsaid bolt, means to reciprocate said bar comprising an auxiliary slidebar, combination -mechanisin comprising a plurality of rotatable disks,said disks being provided With notches alinable to permit movement oli'said auxiliary slide bar thereinto, and means to lock said combinationmechanism in position to permit such movement of said slide bar.

l2. ln a device of the class described, a locking bolt, a bar carryingsaid bolt, means to reciprocate said bar comprising an auxiliary slidebar, combination mechanism comi prising a plurality of rotatable disks,said disks being provided with notches alinable to permit movement oisaid auxiliary slide bar thereinto, and means to lock said coinbinationmechanism in position to permit such movement of said slide bar, saidmeans being operable to lock said combination mechanism in position toprevent movement of said slide bar.

13. ln a device of the class described, a locking bolt, a bar carryingsaid bolt, means to reciprocate said bar comprising an auxiliary slidebar, combination mechanism comprising a pluraltiy of rotatable disks,said disks being provided with notches alinable to permit movement ofsaid auxiliary slide bar thereinto, and means to lock said combinationmechanism in position to permit such movement of said slide bar, saidlastnamed means comprising a reciprocable bar. let. In a device of theclass described, a

,locking bolt, a bar carrying said bolt, means to reciprocate said barcomprising an auxiliary slide bar, combination mechanism coinprising aplurality of rotatable disks, said disks being provided With' notchesalinable to permit movement of said auxiliary slide bar thereinto, andmeans to lock said conibination mechanism` in position to permit suchmovement of said slide bar, said lastnamed means comprising areciprocable bar, one ot said disks being provided with a notch Votherthan the locking notch and said reciprocable bar being provided with aportion movable into engagement with said lastnamed notch to locksaiddisk and thereby the combination.

l5. 'ln 4a device oil the class described, a locking bolt, a barcarrying said bolt, means to reciprocate said bar comprising anauxiliary slide bar, combination mechanism comprising a plurality ofrotatable disks, said disks being provided With notches alinable topermit movement osaid auxiliary slide bar thereinto, means to lock saidcombination mechanism in position to permit such movement of said slidebar, and means to move said bar from locking position.

`16. In a device of the class described, a locking bolt, a bar carryingsaid bolt, means to reciprocate said bar comprising an auxiliary slidebar,` combination mechanism comprising a plurality of rotatable disks,said disks being provided with notches aliiiable to permit movement ofsaid auxiliary slide bar thereinto, means to lock said combinationmechanism in position to permit such movement of said slide bar, meansto move said bar from locking position, said lastnamed means comprisinga second reciprocable bar, and means operatively connecting same withsaid first-named reciprocable bar.

17. ln mechanism of the class described, a casing, a cover therefor, alock bolt, a bar carrying said bolt and reciprocably mounted in saidcasing, means to actuate said bolt and bar, said means comprising aslide bar and an auxiliary slide bar, guide lugs located in said casingand on said cover for said slide bars respectively, and lugs carried bysaid auxiliary slide bar and coacting with said guide lugs to limit themovement in one direction ot' said auxiliary slide bar.

18. The combination With a door having a lock casing, of a lock bolttherein, a reversible bar carrying said bolt, means to reciprocate saidbar comprising a plurality oic interchangeable slide bars, one operablefor actuating said bolt carrying bar from the outside and the other fromthe inside of said door, the former having an extension at one end,combination mechanism comprising a plurality of rotatable disks, saiddisks being provided with notches alinable to permit movement of theslide bar having the eXtension in such wise that the latter may entersaid notches to permit ot' the actuation of said bolt carrying bar, andmeans whereby the latter may be actuated by means of the other of saidslide bars independently ot said combination mechanism.

19. The combination with a door having a lock casing, ot a locking bolttherein, a reversible bar carrying said bolt, means to reciprocate saidbar comprising a plurality of interchangeable slide bars, one operablefor actuating` said bolt carrying bar irom the outside and the otheri'rom the inside of said door, and combination mechanism coacting withthe former for permitting or preventing the actua-tion oi said boltcarrying bar.

20. The combination with a door having a lock casing, ot a locking boltmounted in said casing, a bar carrying said bolt, means to reciprocatesaid bar comprising a plurality of interconnected interchangeable slidebars, one being operable for actuating said bolt carrying bar trom theoutside and the other from the inside oi" said door, the latter beingoperable independently of the tormer for effecting such actuation andthe former depending upon the interconnection between said bars tor itsactuation, and com bination mechanism to permit or prevent this latteractuation.

2l. The combination with a door having a lock casing, of a lock bolttherein, a reversible bar carrying said bolt, means for reciprocatingsaid bar including a plurality of interchangeable slide bars, andcombination mechanism coacting with one of said slide bars forpermitting or preventing actuation oif said iirst-named bar.

22. In a permutation lock, a rotatable driving disk, a rotatable drivendisk, coupling means interposed therebetween, and means for operatingsaid driving disk, said disks being eccentrically arranged and eachhaving a notch therein lying in the portion of lesser eccentricity.

23. ln a permutation lock, a rotatable driving disk, rotatable drivendisk, coupling means interposed therebetween, and means for operatingsaid driving disk, said disks being eccentrically arranged and eachhaving a plurality ot notches therein, one notch of each disk beingsigniiicant and lying in the portion ot lesser eccentricity, the othersbeingI designed to mislead those attempting to feel out the combination.

In a permuta-tion lock, a plurality of rotatable disks, each having alnotch in its periphery, and means for operating said disks, theperipheries of the latter being eccentrically arranged and the notchestherein being located in portions of lesser eccentricity.

in testimony whereof, l have subscribed my name.

THOMAS E. SHANNON.

